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Old 31st August 2014, 02:46 PM
alexmuir alexmuir is online now
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Join Date: Jan 2010
Location: Glasgow, Scotland.
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If strips on the test are hard to distinguish, you could put marks on your test strip with a pen, before exposure. They should be dark enough to see by enlarger light. You then place your card on each successive mark as you expose the test. This is useful even if you are not doing split grade.
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